Thread-swelling machine



June l0, 19.30.

C. F. ROBERTS Filed Aug. 30, 1928 THREAD SWELLING MACHINE attozucgtPatented .lune 10,

nutren STATES PATENT orifice;

mm-1mm CHARLES F. EGBERTS, or UTICA, NEW YORK, AssIGnoR To HERBERT s.rowELn,

OF UTICA, NEW YORK THREAD-SWELLING MACHINE Application filed August 30,1928.

My invention relates to a thread swelling n'i'achine, and l declare thefollowing to be a full, clear, concise and exact description thereofsutiicient to enable anyone skilled in the art to which it appertains tomake and use the same, reference being had to the accoinpanying drawingsin which like reference characters refer to like parts throughout thespecification.

The object of the invention is to provide a ce for bulging or swellingthe threads of a bolt in such manner as to raise or elevate theportionsof the thread in diametrically opposite portions to prevent thenut mounted said boltfrom turningthereoff. In practice .e nut will bescrew mounted on the bolt to a. tight fitting position adjacent theobject held in place. yThe device will then be used to swellthe threadsof the bolt just back of the nut to raise or form an elevation of the lreads, whereby to lock the nut in k L sition on the bolt. rlhe objectwill be understood by referring to the drawings in which:

Fig. 1 is a perspective View of the device f-;liowing parts broken away.

' l is a central, vertical section showing broken away.

Fig. 8 is a perspective view, showing parts broken away,'of a boltillustrating the same after the nubs have been made therein by themember shown in Figs. 1 and 2.

Referring more particularly to the drawings, the device embodies handles1, 2 that e pivoted together at 3. For this purpose handle 2 is splicedor forked at 4 to form a recess for the reception of annular tongue 5 ofhandle 1. Each of the handles 1 and 2 has a bearing part with anaperture 11 for the projection of a shaft 12 upon which a channel. link15 is pivoted. The ends of each vhe shafts 12, 12 are spread to holdthem in assembled position. Each of the channel links 15, 15 straddlesthe upper edge of handles 1 and 2 respectively and is in turn pivot-edat 16, 16 to one of the two levers 17, 17 Each of the levers 17, 17 isfulcrumed upon a headed bolt 2O carried in clamping plates 21, 21 thatare disposed on opposite surfaces of said levers 17 17. The forwardjacent th Serial No. 303,089.

ends of levers 17, 17 are formed into jaws 18, 18 having in eachinstance a rectangular recess 25, 25 adapted for the reception of aportion of the surface of bolt 80 therein when said bolt 8O is placed inright angle position to said jaws and therebetween. These rectangularrecesses 25 each are bounded by two walls which form an angle notgreater than a right angle with the work engaging faces the jaws 18,thereby forming corners 31 at the intersections of these walls and thework engaging faces which penetrate the work. Corners 31 of said jawswill pinch the surface of bolt 80 at diametrically opposite positions,and thereby force the portions 32, 32 of the surface of bolt 30 betweenopposing corners outward to form swellings or raised port-ions 82. Theseraised portions 82 will prevent the nut from turning off boltv 80. Nuts40, that are mounted on headed bolts 20, 2O are in each instanceequipped with annular flanges 41, 41 having peripheral teeth 42 whichlit into recesses 48 made in plate 45 that is mounted thereover, wherebyto prevent nuts 4() from turning off bolts 20, 20. Clamping plates 21,21 are held together by a headed bolt 46 passing through the centerthereof and by nut 47 mounted on said bolt 46.

rJ'he means for adjusting jaws 18, 18 relative vto the spacetherebetween contemplates the movement of channel links 15, 15, on theirrespective pivots 12, 12 relative to handles 1 and 2, whereby to governthe extent of movement of jaws 18, 18. Said channel links 15;, 15 areheld in this given relation relative to handles 1 and 2 respectively byemploying in each instance two bolts, 50 and 51. Bolt 50 has a flatannular lower part 48 swiveled on a pin 49 disposed transversely throughhandle 1. in aperture 52 is made in each of handles 1 and A2 for thereception of the lower vflat annular part 48 of bolt 50. The upper endof bolt 5() projects through an enlarged recess 53 formed in therespective channel link 15. A nut 55 is mounted on the upper end of bolt50, whereby to limit the outward swing of the channel link 15. rlheswing of each of the channel bars 15, 15in the 4opposite direction isdetermined by a set bolt 51 mounted in a threaded aperture in theenlarged part 57 of each of channel links 15, 15. The lower end of eachof set bolts 51 abuts against the top surface of handles 1 and 2slightly concaved 'for the purpose, whereby to limit the inward swing ofchannel links 15, 15. The combinati-on of bolts 50 and 51 in each setwill aid in deterininingk the relation of the outer or free ends oi channel linlrsl, 15, relative to handles 1 and 2, whereby to govern theamount of movement ot jaws 18, 18, relative to each other.

llfembers 60, 60 composed ot some resilient material. like rubber arefastened to the inner l sides of handles 1 and 2 and adapted to regwardmovement of ends 61, 61 will cause levers 1T, 17 to rockon their pivots20, 20 in such manner that jaws 18, 18 will move inwardly towards eachother whereby opposing corners S1 of aws 18 will cut opposite surfacesof bolt 30 and pinch 'the threaded portions outward ff to term nubswellings or elevations 32 adapted to prevent any nut mounted on saidbolt 30,

from turning thereotl".

1t will be noted that jaws 18, 18 move in the opposite direction tohandlesl and 2. rEhis is made possible by the use of channel link 15,15. Furthermore it has its advantagesv in that it'allows Vthe user toexercise a greater leverage upon jaws 18, 18 by means of handles 1 and2.

it y -iyrea vice is effect-ed by ,Bea

to hold a bolt therebetween, members. pivotally connected to said jaws,whereby to. adjust the relative movement of said jaws, and rec-ytangular recesses made in said jaws, and having two walls torming anangle not greater than a right angle with said worlr engaging faceswhereby to upset the threads of a bolt held therebetween. Y v l el. ln athread swelling machine, movable aws having work engaging` faces adaptedto e hold a boltY therebetween, members pivotally united to said jaws,whereby Vto govern the movement of said jaws relative to each other,handles connected to said members, whereby to actuate said jaws andrectangular recesses made in said jaws, and having two walls 'tor-mingan angle not greater than a right angle with said work engaging faces,whereby to upset the threads of a holt held therebetween.

In testimony whereof l signature.v

errantes? r. nonnirrs.

Having thus described my invention what y l claim as new and desire tosecure by Letters yPatent is asfollows: j c

1. ln a thread lswelling machine, movable Vjaws having work engagingfaces adapted to hold a bolt therebetween andrectangular re'- cessesmade in said jaws, and having two walls forming an angle not greaterthan a right angle with said work engaging faces, whereby to upset thethreads of a bolt. V

to hold abolt therebetween, means for adjusting the extent 4of movementof said aws, and rectangular recesses made in said jaws, and having twowalls' forming anV angle not greater than a ridht angle with said workengaginofaces, whereby toupset the threads of bolt neld therebetween.3.111 a thread swelling machine, movable e. jaws having lwork engagingfaces, adapted 2. in a threadswelling machine, movablev jaws,having workengaging faces, adapted have affixed. my

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